Single-player games like MOLEK-SYNTEZ
Below are 10 single-player Steam games similar to MOLEK-SYNTEZ, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like MOLEK-SYNTEZ page.
Ranked picks
- 1
SpaceChem
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
Zachtronics is back with an ambitious new design-based puzzle game. Take on the role of a Reactor Engineer working for SpaceChem, the leading chemical synthesizer for frontier colonies. Construct elaborate factories to transform raw materials into valuable chemical products!
- 2
Opus Magnum
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, and SHENZHEN I/O. Design and build machines that assemble potions, poisons, and more using the alchemical engineer’s most advanced tool: the transmutation engine!
- 3
EXAPUNKS
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
The year is 1997. You used to be a hacker, but now you have the phage. You made a deal: one hack, one dose. There’s nothing left to lose… except your life.
- 4
SHENZHEN I/O
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
BUILD CIRCUITS. WRITE CODE. RTFM.
- 5
Last Call BBS
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
Boot up your Z5 Powerlance and dial into Last Call BBS, the last game from Zachtronics! The Barkeep’s loaded up his retro computer with a full set of puzzle games for you to download and play. No need to worry about copy protection, they’re all fully cracked and ready to enjoy!
- 6
Kaizen: A Factory Story
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Simulation with MOLEK-SYNTEZ.
Kaizen is an open-ended puzzle automation game from the original Zachtronics team, set in 1980s Japan. Design, build, and optimize production lines to create iconic products, like calculators, camcorders, and arcade machines.
- 7
TIS-100
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
TIS-100 is an open-ended programming game by Zachtronics, the creators of SpaceChem and Infinifactory, in which you rewrite corrupted code segments to repair the TIS-100 and unlock its secrets. It’s the assembly language programming game you never asked for!
- 8
The Signal State
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Simulation with MOLEK-SYNTEZ.
Set in a post-apocalyptic future, The Signal State puts your logic skills to the test with complex puzzles inspired by modular synthesizers. Repair machines, rebuild an abandoned farm, and be part of a revolution that will change the fate of agriculture once and for all.
- 9
Infinifactory
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie and Simulation with MOLEK-SYNTEZ.
Infinifactory is a sandbox puzzle game by Zachtronics, the creators of SpaceChem and Infiniminer. Build factories that assemble products for your alien overlords, and try not to die in the process.
- 10
Eliza
Single-player alternative to MOLEK-SYNTEZ — playable solo, no multiplayer required. Shares Indie with MOLEK-SYNTEZ.
Eliza is a visual novel about an AI counseling program, the people who develop it, and the people who use it. Follow Evelyn Ishino-Aubrey as she reconnects with people from her past, gets to know the people of Seattle who use Eliza for counseling, and decides the course of her future.